Updated get-packages.sh to create installer for grpc before install

get-packages.sh

@@ -31,7 +31,7 @@ function main()
 		cd $here_dir/third-party/grpc
 		if [[ ! -x third_party/protobuf/src/protoc ]] && [[ ! -x /usr/local/bin/protoc ]] ; then
 			if [[ ! -f Makefile ]]; then
-				cmake .
+				cmake -DgRPC_INSTALL=ON -DCMAKE_INSTALL_PREFIX=/usr/local .
 			fi
 			make -j 3
 			sudo make install